20108080 has 40 divisors (see below), whose sum is σ = 49215600. Its totient is φ = 7619328.

The previous prime is 20108071. The next prime is 20108083. The reversal of 20108080 is 8080102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (20108083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5095 + ... + 8134.

It is an arithmetic number, because the mean of its divisors is an integer number (1230390).

Almost surely, 2^20108080 is an apocalyptic number.

20108080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20108080 is an abundant number, since it is smaller than the sum of its proper divisors (29107520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20108080 is a wasteful number, since it uses less digits than its factorization.

20108080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13261 (or 13255 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 20108080 is about 4484.2033852179. The cubic root of 20108080 is about 271.9298406129.

Adding to 20108080 its reverse (8080102), we get a palindrome (28188182).

The spelling of 20108080 in words is "twenty million, one hundred eight thousand, eighty".